The mechanism of action of sodium nitroprusside is_____________?
Correct answer: B. Direct Vasodilator
- A. Increases cAMP
- B. Direct Vasodilator
- C. Calcium channel blocker
- D. Block the sympathetic flow at hypothalamus
Explanation
Sodium nitroprusside releases nitric oxide, which increases vascular cGMP and directly relaxes vascular smooth muscle in both arteries and veins. Its action is therefore classified as direct vasodilation rather than calcium-channel blockade or central sympathetic inhibition.
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